纳米二氧化硅/聚醚共聚乙酰胺防水透气涂层织物的研制及其性能

为改善聚醚共聚乙酰胺涂层的防水透气及力学性能，将采用St?ber 方法制备的无机颗粒与强疏水性的聚醚共聚乙酰胺高分子材料有效复合，制备出高性能的有机/无机复合防水透气织物涂层。分别对制备的无机颗粒成分及其形貌结构，以及涂层和涂层织物的形貌结构进行表征分析，并讨论无机颗粒添加量对涂层和涂层织物防水透气及力学性能的影响。结果表明：制备的无机颗粒为纳米球形二氧化硅颗粒，适当添加该颗粒可有效改善涂层织物的综合性能，使其达到服用要求；当其添加量为1.5%时，涂层织物综合性能最优，涂层的断裂强力、断裂伸长率分别增加52.4%和11.0%，涂层织物表面接触角增大20.0%，透气率增幅达242.6%。

Preparation and property of waterproof breathable nano silicon dioxide microspheres / poly-ether block amide coating fabric

To improve the waterproof breathability and mechanical properties of poly-ether block amide coating, the inorganic particles were prepared by St?ber method, and filled into poly-ether block amide polymer materials with strong hydrophobicity, then the high-performance organic/inorganic composite waterproof breathable coating fabric was prepared. The composition, morphology and structure of the inorganic particles, and morphology of the coating and coating fabric was characterized, and the effects of the inorganic particles addition amount on the properties of coating and coating fabric were studied. Results show that the inorganic particlesare nano silicon dioxide microspheres, the comprehensive performance of coated fabric can be effectively improved by the addition of nano silicon dioxide microspheres in moderation, and then meet the clothing requirements. With 1.5% addition amount of the nano silicon dioxide microspheres, the comprehensive performance of coating fabricare optimal, the breaking force and elongation at break of the coating increased 52.4% and 11.0% respectively.The waterproof property of the coating fabric isimproved 20.0%, and the breathable performanceis improved 242.6%.